/*
 * Copyright 2011 Clean GWT
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package com.cleangwt.view.client;

import com.cleangwt.json.client.SimpleObject;
import com.google.gwt.view.client.ProvidesKey;
import com.google.gwt.view.client.TreeViewModel;

/**
 * The {@link TreeViewModel} for {@link SimpleObject}.
 * 
 * @author Jess
 * @version 1.0
 * @since 1.0
 */
public class SimpleKeyProvider implements ProvidesKey<SimpleObject> {

  private String keyName;

  public SimpleKeyProvider(String keyName) {
    this.keyName = keyName;
  }

  @Override
  public Object getKey(SimpleObject item) {
    return item.get(keyName);
  }

}